diff --git a/README.md b/README.md
index ad96649..5c8f2ac 100644
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+++ b/README.md
@@ -48,6 +48,8 @@ Add plants and trees to your registry (species, variety, planting date, location
 
 - **Plant registry**: common name, Latin binomial, variety, rootstock, grafting date and scion source
 - **Grow calendar**: planting windows, last frost integration, days-to-maturity countdowns
+- **Companion planting**: bed-level compatibility matrix showing beneficial pairings, pest deterrence guilds (Three Sisters and others), and plants to keep separated; LLM explains the reasoning behind each pairing
+- **Light mapping**: track sun exposure per bed across seasons; input sunrise/sunset angles for your coordinates or log direct observations; Waxwing recommends plant placements based on actual light hours rather than generic "full sun / part shade" labels
 - **Graft tracker**: union success rate, scion-rootstock compatibility notes, photo log
 - **Diagnosis**: photo upload or symptom description; visual model suggests deficiencies, pests, or disease
 - **Harvest log**: yield by variety and season; searchable history